<template>
	<div class="list" ref="wrapper">
		<div>
			<div class="area">
				<div class="title border-topbottom">当前城市</div>
				<div class="button-list">
					<div class="button-wrapper">
						<div class="button">{{this.$store.state.city}}</div>
					</div>
					
				</div>
			</div>
			<div class="area">
				<div class="title border-topbottom">热门城市</div>
				<div class="button-list">
					<div class="button-wrapper" 
						 v-for="item of hot"
						 :key="item.id"
						 @click="handelCityClick(item.name)"
					>
						<div class="button">{{item.name}}</div>
					</div>
				</div>
			</div>
			<div class="area" 
				 v-for="(item,key) of cities" 
				 :key="key"
				 :ref="key">
				<div class="title border-topbottom">{{key}}</div>
				<div class="item-list">
					<div class="item border-bottom"
						 v-for="innerItem of item"
						 :key="innerItem.id"
						 @click="handelCityClick(innerItem.name)"
					>{{innerItem.name}}</div>
				</div>
			</div>
		</div>
	</div>
</template>

<script>
import BScroll from 'better-scroll'
export default{
	name: 'CityList',
	props: {
		hot: Array,
		cities: Object,
		letter: String
	},
	methods: {
		handelCityClick (city){
			// this.$store.dispatch("changeCity",city)//省去actions
			this.$store.commit("changeCity",city)
			this.$router.push("/")
		}
	},
	mounted () {
		this.scroll = new BScroll(this.$refs.wrapper)
	},
	watch: {
		letter() {
			if (this.letter) {
				const elemnet = this.$refs[this.letter][0]
				this.scroll.scrollToElement(elemnet)
			}
		}
	}
}
</script>

<style lang="stylus" scoped>
	@import "~styles/varibles.styl"
	.border-topbottom
		&:befor
			border-color: #ccc
		&:after
			border-color: #ccc
	.border-bottom
		&:befor
			border-color: #ccc
	.list
		overflow: hidden
		position: absolute
		top: 1.58rem
		left: 0
		right: 0
		bottom: 0
		.title
			line-height: .54rem
			background: #eee
			padding-left: .2rem
			color: #666
			font-size.26rem
		.button-list
			overflow: hidden
			padding: .1rem .6rem .1rem .1rem
			.button-wrapper
				float: left
				width: 33.33%
				.button
					margin .1rem
					padding: .1rem 0
					text-align: center
					border: .02rem solid #ccc
					border-radius: .06rem
		.item-list
			.item
				line-height: .76rem
				color: #666
				padding-left: .2rem
</style>